<template>
  <div ref="vantaRef" style="width: 100%; height: 100vh">

    <div class="login">

      <div class="titlebox">
        鑫微汽车
      </div>
<!--     <div class="form-box">-->
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
        <i class="top"></i>
        <h3 class="title">鑫微汽车附件管理系统</h3>
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            type="text"
            auto-complete="off"
            placeholder="账号"
          >
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code" v-if="captchaEnabled">
          <el-input
            v-model="loginForm.code"
            auto-complete="off"
            placeholder="验证码"
            style="width: 63%"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img"/>
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
        <el-form-item style="width:100%;">
          <el-button
            :loading="loading"
            size="medium"
            type="primary"
            style="width:100%;"
            @click.native.prevent="handleLogin"
          >
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
          <div style="float: right;" v-if="register">
            <router-link class="link-type" :to="'/register'">立即注册</router-link>
          </div>
        </el-form-item>
        <i class="bottom"></i>
      </el-form>
<!--    </div>-->

      <!--  底部  -->
      <div class="el-login-footer">
        <span>致力于更好的管理后台</span>
      </div>

    </div>

  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'
import * as THREE from 'three'//导入样式
import BIRDS from 'vanta/src/vanta.birds'//导入动态样式逻辑

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        username: "admin",
        password: "admin123",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" }
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: false,
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
    this.getCookie();
  },

  mounted() {
    this.vantaEffect = BIRDS({
      el: this.$refs.vantaRef,
      THREE: THREE
    })
    // 修改颜色时 cells 需要全大写字母 可生效
    VANTA.BIRDS({
      el: this.$refs.vantaRef,
      mouseControls: true,
      touchControls: true,
      gyroControls: false,
      minHeight: 200.0,
      minWidth: 200.0,
      scale: 1.0,
      color1: 14381274,
      color2: 16443110,
    });
  },
  beforeDestroy() {
    if (this.vantaEffect) {
      this.vantaEffect.destroy()
    }
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || "/" }).catch(()=>{});
          }).catch(() => {
            this.loading = false;
            if (this.captchaEnabled) {
              this.getCode();
            }
          });
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  //background-image: url("../assets/images/back.jpg");
  //background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: black;
}

.login-form {
  border: 1px solid rgba(32, 254, 255, 0.3);
  position: relative;
  border-radius: 6px;
  background: #DCDCDC;
  margin-left: 30%;
  width: 350px;
  opacity: 0.8;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}

.login-form::before {
  content: " ";
  position: absolute;
  width: 1px;
  height: 100%;
  top: -100%;
  left: 0;
  background-image: linear-gradient(
      0deg,
      transparent,
      #03e9f4,
      transparent
  );
  animation: two 4s linear infinite;
}
.login-form::after {
  content: " ";
  position: absolute;
  width: 1px;
  height: 100%;
  bottom: -100%;
  right: 0;
  background-image: linear-gradient(
      360deg,
      transparent,
      #03e9f4,
      transparent
  );
  animation: four 4s linear 2s infinite;
}

.login-form i {
  position: absolute;
  display: inline-block;
  height: 2px;
  width: 100%;
}

.login-form .bottom {
  bottom: 0;
  left: -100%;
  background-image: linear-gradient(
      270deg,
      transparent,
      #03e9f4,
      transparent
  );
  animation: one 4s linear 1s infinite;
}

.login-form .top {
  top: 0;
  right: -100%;
  background-image: linear-gradient(
      270deg,
      transparent,
      #03e9f4,
      transparent
  );
  animation: three 4s linear 3s infinite;
}


@keyframes one {
  0% {
    left: -20%;
  }
  50%,
  100% {
    left: 20%;
  }
}

@keyframes two {
  0% {
    top: -20%;
  }
  50%,
  100% {
    top: 20%;
  }
}

@keyframes three {
  0% {
    right: -20%;
  }
  50%,
  100% {
    right: 20%;
  }
}

@keyframes four {
  0% {
    bottom: -20%;
  }
  50%,
  100% {
    bottom: 20%;
  }
}

//.form-box{
//  //position: relative;
//  //height: 100%;
//  //width: 100%;
//}


.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
.titlebox{
  width: 300px;
  float: right;
  color: white;
  text-align: center;
  font-size: 60px;
}



</style>

